Ask HN: Resources to learn basic UI layout design for React apps?

I'm a systems developer. I have been trying to learn web development using React so that I can create MVPs for some ideas I have. I've enjoyed learning React and I'm sure I can handle the backend code as well. What I struggle with is designing a layout. I've been using a layout library (material-ui) but I struggle with how to layout two elements horizontally or vertically etc. (Container element?). Is there a tutorial that can teach me enough to get by on this front ? I get too bored while learning the nuances of CSS.